GerusAudio 300B, 8 Watts, $1400 Plus Shipping

NOTE: The 300B tubes ARE included with this amplifier

This is my 2nd generation of 300B amplifiers. The changes for this batch of amplifiers are:

1. Using the GZ34 rectifier because of it's slow power up feature

2. Added another stage to the high voltage power supply.


Tubes Included: 2-300B's, 2-6SH7's, 1-GZ34

Power: 8.0  Watts per channel before clipping

Output: 8R

OPT’s: Lundahl LL1664 60mA

Frequency Response: 11Hz - 58KHz -3dB measured at 2.2 watts

Input Sensitivity: 2.1 Vrms for 8.0 Watts into 8 Ohms

DC heaters for all valves

Hum: none

Size: 16W, 13D, 7.75H

Weight: 35 lbs.

Power Supply: 432VDC at 140mA

Power Supply: C-LC-RC

Valve operating voltages:

6SH7: 220V, -4V, 10mA (Triode Mode)

300B: 350V, -74V, 60mA

Coupling Caps: Jensen .22uF Copper/Oil


Shipping to lower 48 states only, $50-$90 based on actual cost



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GerusAudio 6A3 Stereo Amplifier, 3.5 Watts, $1500

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GerusAudio "A3" Series

Tubes Included: 2-6A3, 2-6SH7's, 1-GZ34

Power: 3.5 Watts per channel before clipping

Output: 8R

OPT’s: Lundahl LL1664, 3K:8R, 60mA

Frequency Response: 9Hz - 57KHz -3dB measured at 2.2 watts Input Sensitivity: 1.3 Vrms for 3.5 Watts into 8 Ohms

Hum: none

Size: 16W, 13D, 7.75H

Weight: 35 lbs.

Power Supply: 303VDC at 140mA

Valve operating voltages:

6SH7: 170V, -3V, 6.6mA (Triode Mode)

6A3: 250V, -45V, 60mA

Coupling Caps: Jensen .22uF Copper/Oil

Power Supply: C-LC-RC

Shipping to lower 48 states only, $50-$90 based on actual cost

01/23/2019 Update: SOLD

T-Rex Reborn, 9.2 Watts, $1400 with Free shipping

This amplifier was made with used Plitron transformers.

Please contact me if interested.

Note: 300B tubes not included

https://300bamps.com/t-rex-reborn